From skyrocketing temperatures and humidity to brutally fought almost-five-hour battles ending after 2:00 a.m., here are scenes from the 138th U.S. Open, on and off the court.

The last installment of the year’s Grand Slam tennis tournaments—the 138th U.S.?Open, in Flushing, Queens—reaches its crescendo and denouement over the next couple of days. It’s been a wild one already—from the skyrocketing temperatures and humidity that fostered a kind of survival-of-the-fittest mentality from competitors to brutally fought almost-five-hour battles ending after?2:00?a.m.?(that’s defending champion Rafael Nadal almost miraculously slipping away from Dominic Thiem in the quarterfinals).

New this year: the just-christened 14,000-capacity Louis Armstrong Stadium, a new state-of-the-art retractable-roofed venue to replace the old one of the same name. Also new this year: the odd sight of Roger Federer wearing something other than Nike (he’s a Uniqlo guy now); the notion that we’ll be crowning someone other than Sloane Stephens?as the champion (Stephens lost to Latvia’s Anastasija Sevastova in the quarters). Still the same this year: the 23,000-plus-capacity?Arthur Ashe Stadium, the world’s largest tennis showcase, where the rest of this year’s action will be taking place—and, of course, the world’s most passionate (and unruly), devoted (obsessed), and faithful fans.

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Predictions? Yeah—It might get loud out there. Enjoy the rest of the tourney, everyone.